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      09-27-2010, 09:14 AM   #1
Mike@N54Tuning.com
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Wavetrac LSD GroupBuy! (135/335)

UPDATE

Well the response has been overwhelming, but the bad news is we don't have a unlimited supply in this batch so we have to set a CAP on this and we are FAST approaching it. Please get your deposits in to ensure a spot as we are almost into an overflow situation. Just confirmed the stock amounts so this is the FINAL allotment list.

Also please CONFIRM your Diff type based on your VIN, especially if you are in the fuzzy 03/07 build date. It is everybody's responsibility to ensure they have the Diff they think they have. Also please add to the thread or email me whether you need the install kit and if you will be doing the CORE exchange.

FINAL List

1) GarrettF - Email RECEIVED -PAID DEPOSIT
2) Bakeme521 - Email RECEIVED - PAID DEPOSIT
3) jdemetry - Email RECEIVED - PAID DEPOSIT
4) The1 - Email RECEIVED - PAID DEPOSIT
5) BlakeAction - Email RECEIVED - PAID DEPOSIT
6) ricehero - Email RECEIVED - PAID DEPOSIT
7) GaryS - Email RECEIVED - PAID DEPOSIT
8) nestillo335i - Email RECEIVED - PAID DEPOSIT
9) kang159 - Email RECEIVED - PAID DEPOSIT
10) topspin - Email RECEIVED - PAID DEPOSIT
11) SloppyJoe - Email RECEIVED - PAID DEPOSIT
12) Palisades - Email RECEIVED - PAID DEPOSIT
13) BNK - Email RECEIVED - PAID DEPOSIT
14) 2gabriel6 - Email RECEIVED - PAID DEPOSIT
15) dwoerz - Email RECEIVED - PAID DEPOSIT
16) achtungE30 - Email RECEIVED - PAID DEPOSIT
17) oofzpumba - Email RECEIVED - PAID DEPOSIT
18) weq92f - Email RECEIVED - PAID DEPOSIT
19) Vroom - Email RECEIVED - PAID DEPOSIT
20) ekis18 - Email RECEIVED - PAID DEPOSIT

Reserve Spot (Most likely okay but will need to verify stock)

1) scott135i - Email RECEIVED - PAID DEPOSIT
2) techlogik - Email RECEIVED - PAID DEPOSIT

I am happy to announce I managed to get a Group Buy for the Wavetrac LSD together for you guys! It has taken about 3-weeks to get a deal together I felt was a good value for you guys.



Early 335i (up to 3/2007) came with a bolted rear differential. This made it possible to just swap the rear differential to an aftermarket LSD. However, starting 3/2007, BMW started welding the ring gears in the factory rear differential to the differential carrier. This made it very difficult and expensive to change differentials. Not anymore. Wavetrac is now offering a service to modify your welded factory differential to work with their LSDs. The welded ring gear in welded factory differential is CNC machined and seperated. Once seperated, the ring gear is CNC machined and modified to accept the Wavetrac LSD. This also includes installation & reshiming of the LSD into the differential housing.

Check the chart below to see if you need the installation kit.

Model Installation Kit (Installation Kit Required)

1) MT cars up to March 2007 have bolted DIFS and ONLY need the LSD
2) MT cars after March 2007 have welded DIFS and need to send in their DIF to be machined (The cost of this is 595.00) Core exchange is available for MT CARS
3) AT cars up to mid-2009 have bolted DIFS and ONLY need the LSD
4) I have arranged for a shop in Southern California to do the work for you local Cali guys. They charge 240.00 to swap a COMPLETE pumpkin and 500.00 if you are bolted and need the LSD installed. They have one or two cores so there is no core charge if you go that route.

135i with manual tranmission (all) Yes
135i with automatic transmission (all) Yes

ZERO DOWNTIME OPTION and its technically FREE

The way it works is you get charged an 800.00 dollar core charge, which is 100% refundable and wavetrac sends you a fully installed LSD/DIF, which you swap and send your stock one back and get your 800.00 back


Pretty sweet deal I think!



The stock rear differential in both the 135i and 335i is an open differential from the factory. This means you can only put power to the ground on 1 wheel. With an aftermarket rear differential like the Wavetrac, you can now put power down to both wheels! During a turn, the weight of the car is transfered to the wheels on the outside of the turn. With the weight transfered to the outside, the inside wheel will now have less traction. In an open differential, power is sent to the wheel that has the least amount of traction. This means that if you applied power in mid turn, power would be sent to the inside wheel and thus making it spin and lose traction. With the Wavetrac Limiited Slip Differential (LSD), power is sent equally to both drive wheels giving you the ability to apply power in mid turn. This equates to better traction and thus faster exit speeds out of the corner. As any racer will tell you, exit speed will make a big difference in your lap times. The Wavetrac LSD is what we use on our Time Attack 135i.

Whether you track your car or not, upgrading to the Wavetrac LSD will completely change the dynamic of the car under power. You'll be suprised how much more traction you have, even driving on the street!

Last edited by Mike@N54Tuning.com; 10-13-2010 at 11:40 AM.
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      09-27-2010, 09:31 AM   #2
marcel b
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so how does it work when you have a welded dif? You need to send it somewhere or...?

thanks.
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      09-27-2010, 12:37 PM   #3
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This is too tempting......
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      09-27-2010, 01:27 PM   #4
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Quote:
Originally Posted by marcel b View Post
so how does it work when you have a welded dif? You need to send it somewhere or...?

thanks.
The install kit, is a service that Wavetrac provides where they machine your stock Dif to accept the LSD and they install the LSD as well. You then just bolt it up to your car. You need to obviously send it in to them. Since you're from Europe it would be more cost effective to find a shop local to you to perform the surgery and just grab the unit.

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      09-27-2010, 01:28 PM   #5
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Damn this might be a bit soon for me...

My car's date is 3/07 (6mt), is there a way to tell if its welded or not before I take it apart?
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      09-27-2010, 01:51 PM   #6
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If we're local. What's the total price for diff including the install kit. (2010 model)?
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      09-27-2010, 02:00 PM   #7
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so let me get this correct if you have a welded diff you have to uninstall it send it to them and then wait for them to modify it and send it back to you? its safe to say that the car will be parked for a week or two uhh?
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      09-27-2010, 02:35 PM   #8
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Quote:
Originally Posted by Mitch1er View Post
If we're local. What's the total price for diff including the install kit. (2010 model)?
Would be about $1590.00

Quote:
Originally Posted by lamia2super View Post
so let me get this correct if you have a welded diff you have to uninstall it send it to them and then wait for them to modify it and send it back to you? its safe to say that the car will be parked for a week or two uhh?
I am working on a second option where they send you a DIF with the LSD installed and you send back your old DIF. Will be more but should have some pricing info on that soon. Definitely more convenient if your car is a daily driver.

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      09-27-2010, 03:21 PM   #9
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Would be about $1590.00



I am working on a second option where they send you a DIF with the LSD installed and you send back your old DIF. Will be more but should have some pricing info on that soon. Definitely more convenient if your car is a daily driver.

Mike
this is what i meant ^. An option which can just be bolted in. if the price is right for this, i'm in.
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      09-27-2010, 05:48 PM   #10
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Quote:
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this is what i meant ^. An option which can just be bolted in. if the price is right for this, i'm in.
Got the option for you and its technically FREE

The way it works is you get charged an 800.00 dollar core charge, which is 100% refundable and wavetrac sends you a fully installed DIF, which you swap and send your stock one back and get your 800.00 back

Pretty sweet deal I think!

Mike
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      09-28-2010, 07:19 AM   #11
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Ok, so what is the total price with the core charge for a direct diff swap? I am sure this would be much easier to do if you have a complete diff to swap in...
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      09-28-2010, 07:50 AM   #12
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Ok, so what is the total price with the core charge for a direct diff swap? I am sure this would be much easier to do if you have a complete diff to swap in...
Total cost is just under 1600.00 plus the core 800.00 core charge which you get back once you send you stock unit back plus shipping of the units (if sending back that would be 2 trips)

992 for the LSD
595 for the Install Kit

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      09-28-2010, 08:20 AM   #13
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Quote:
My car's date is 3/07 (6mt), is there a way to tell if its welded or not before I take it apart?
Not sure? It is right in the middle of date the range there, that is why I ask.
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      09-28-2010, 09:17 AM   #14
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
Total cost is just under 1600.00 plus the core 800.00 core charge which you get back once you send you stock unit back plus shipping of the units (if sending back that would be 2 trips)

992 for the LSD
595 for the Install Kit

Mike
ya $13 under $1600....just saying

how much would install be? $500?
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      09-28-2010, 02:03 PM   #15
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This is so tempting but at the same time I don't feel like I'm at the diff stage yet. I never go to the track, so I find more use for cosmetics and power at the moment. But I can vouch for the great feeling an LSD gives you
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      09-28-2010, 02:23 PM   #16
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Quote:
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This is so tempting but at the same time I don't feel like I'm at the diff stage yet. I never go to the track, so I find more use for cosmetics and power at the moment. But I can vouch for the great feeling an LSD gives you
I'm in the same boat. I don't even drive all that aggressively and as such, I don't know if I'd even notice the difference. I'd love to test drive an LSD 335 to figure that out though. Anyone in the North Shore area of MA able to help me out?
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      09-28-2010, 05:12 PM   #17
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Would this work on an 06 330i?
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      09-29-2010, 12:53 PM   #18
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I paid $1195 for my Wavetrac and it is my best mod. At $992 it is a must have item. Congrats anyone who doesn't have it yet and gets it now <$1k.

Last edited by jippii ensio; 09-29-2010 at 12:55 PM. Reason: typos
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      09-29-2010, 02:54 PM   #19
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Where can i find a wavetrac shop in iowa? i have e90 auto, build date late 2006
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      09-29-2010, 04:06 PM   #20
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great price!! everyone should take advantage of this.
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      09-30-2010, 01:38 PM   #21
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so whats the final price for those with welded diffs? PM me
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      09-30-2010, 03:29 PM   #22
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where is local for this? and is there install fee for labor?
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